Use Case

3-hour debug sessions,
solved in 3 minutes.

Your STM32 board crashes intermittently. GDB shows a hard fault at 0x0800124C. You've been staring at this for 3 hours.

EmByte Debug Diagnosis

> Hard fault at 0x0800124C

EmByte analyzing fault registers...

CFSR: 0x00008200 — BusFault, precise data access

BFAR: 0x40021018 — RCC_AHB1ENR (clock register)

Mapping to source...

→ spi_init() at main.c:147

Root cause:

You're accessing GPIOB registers before enabling the GPIOB clock.

HAL_GPIO_Init() at line 142 accesses GPIOB before

__HAL_RCC_GPIOB_CLK_ENABLE(). Peripheral clocks must be

enabled before any register access.

Suggested fix:

Add __HAL_RCC_GPIOB_CLK_ENABLE() before line 142

Found 2 other locations with the same pattern.

How EmByte diagnoses your crash.

Reads fault registers (CFSR, HFSR, MMFAR, BFAR). Captures stack frame and register state.

Cross-references fault address → function name + line number from your .elf and .map files. Maps to MCU memory map.

Plain English root cause with specific hardware context. Grounded in your MCU and HAL version, not generic.

Suggested code fix with diff view, ready to apply. Explains trade-offs if multiple options exist.

Scans your entire codebase for the same pattern. Finds bugs before they crash your board.

37%

Of development time spent debugging (GDB Survey 2025)

78%

Of embedded devs cite limited hardware visibility

65%

Affected by inconsistent breakpoint behavior

Works with GDB, J-Link, ST-Link. Understands Cortex-M fault architecture.

See EmByte diagnose a crash on your hardware in real time.